Adjusting Your System
Subwoofer Adjustments
Your powered subwoofer offers a range of setting options. We recommend
the following settings as starting points, but the settings that are best for you
depend upon your speaker placement, electronics and personal taste. After
you've become familiar with what the settings do, experiment with alternate
options to find the method that works best for your system setup. You'll find
an informative article on "Subwoofer Positioning and Adjustment" in the set
up section at: http://www.polkaudio.com/polk-university/articles/bass-
management-and-subwoofer-connections.
Note: When you set up your subwoofer for the first time, you will probably
have to make adjustments several times before you hear what you personally
like. Start with the volume at 50%.
AC Power Connection and Auto On/Off
Your subwoofer features auto on/off circuitry, marked "auto" on the power
switch, which automatically turns your subwoofer on when it senses a
program signal. We recommend the "auto" setting if your subwoofer is
always receiving power (ie, if it's plugged into a wall outlet).
When no signal is present, the circuit turns the subwoofer off after 15
minutes. If you are concerned about the brief delay between when the music
starts and when the subwoofer turns on, simply leave your subwoofer in
the "On" position. You may want to leave your system unplugged during
extended periods of non use, such as during a vacation.
Fine Tuning Your Subwoofer
• V olume—Adjust by ear using a wide variety of CDs and video sources.
Adjust for deep, powerful bass without "boominess."
• L ow Pass—Note: This control should be turned all the way up when
the subwoofer is connected with Method #1 (LINE IN). This control
adjusts the frequency range over which the subwoofer operates. If
male vocals sound "thin," turn this control up until the voice sounds
rich but not "boomy." If male vocals sound too "thick" or "chesty,"
turn this control down until the voice sounds natural.
• P hase Switch—Sit in your favorite listening position. Play music
(not a movie) with a walking bass line. We recommend playing jazz
or country music. Now listen carefully for the point at which the
subwoofer transitions to your main speakers. This is the crossover
point, and this point should be below the frequency of a male human
voice. Whichever phase setting sounds louder or fuller at the
subwoofer's crossover (transition) point is the optimum setting.
Sometimes no difference will be heard.
Troubleshooting
No sound coming from subwoofer
Subwoofer doesn't sound right
Subwoofer has no power
If hookup is "Sub Out" to LINE IN, is your
receiver set to "Subwoofer—yes" If hookup
is via speaker wire, check that the polarity of
the wires is correct.
If hookup is "Sub Out" to LINE IN, is your
receiver set to "Subwoofer—yes" If hookup
is via speaker wire, check that the polarity of
the wires is correct.
Check outlet; check fuse after unplugging
the subwoofer and calling customer service.
LINE IN
L
R
LEFT
PHASE
0°
180°
RIGHT
POWER
ON
OFF
100
LOW PASS
(Hz)
80
160
VOLUME
MIN
MAX
Rear Amp Panel
Power Switch Settings:
On = Green LED
Off = Red LED (no signal)
Auto
No signal = Red LED
Signal = Green LED
Technical Assistance and Service
If, after following these hook up directions, you experience difficulty, please
double-check all wire connections. Should you isolate the problem to the
speaker, contact the authorized Polk Audio dealer where you made your
purchase, or call Polk Audio's friendly Customer Service Department at
1-800-377-7655 (calls from US or CAN only), (Outside the US or CAN,
410-358-3600), 9am to 5:30pm EST, Monday through Friday. You may
also contact us via email: polkcs@polkaudio.com. For more detailed
hookup information and manual updates, visit: www.polkaudio.com.
For more information visit our website at www.polkaudio.com
SPEAKER LEVEL
SPEAKER LEVEL
OUTPUT
INPUT
+
+
LEFT
–
–
–
–
RIGHT
+
+
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